use Mongoid::Post only when mongoid available
use Mongoid::Post only when mongoid available

eileencodes/bullet,sho-h/brakefast,sideci-sample/sideci-sample-bullet,rrosenblum/bullet,jay3126/bullet,hannahbot/bullet,yakovenkodenis/bullet,hannahbot/bullet,PikachuEXE/bullet,danp60/bullet,yakovenkodenis/bullet,flyerhzm/bullet,rrosenblum/bullet,theass/bullet,sho-h/brakefast,jay3126/bullet,flyerhzm/bullet,rstacruz/bullet,flyerhzm/bullet,eileencodes/bullet,danp60/bullet,PikachuEXE/bullet,dwb/bullet,rstacruz/bullet,sideci-sample/sideci-sample-bullet,theass/bullet,dwb/bullet